Essays about: "Acoustic"

Showing result 1 - 5 of 374 essays containing the word Acoustic.

  1. 1. Deep Learning for Deep Water: Robust classification of ship wakes with expert in the loop

    University essay from Göteborgs universitet/Institutionen för data- och informationsteknik

    Author : Igor RYAZANOV; [2020-10-06]
    Keywords : machine learning; deep learning; pattern recognition; acoustic data analysis; shipping data; data augmentation; noise robustness; classification with data imbalance; expert-in-the-loop framework;

    Abstract : This work examines the applicability of the deep learning models to pattern recognitionin acoustic ocean data. The features of the dataset include noise, data scarcityand the lack of labeled samples. A deep learning model is proposed for the task ofautomatic wake detection. READ MORE

  2. 2. Analysis of design requirements for early failure detection in a gear test rig

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : José Agustín Spaccesi; [2020]
    Keywords : Design requirements; Failure detection; FZG test rig; Gear; Konstruktionskrav; Skadedetektering; FZG-rigg; Kuggväxlar; Engranajes; Detección de fallo; Requisitos de diseño; Equipo de prueba FZG;

    Abstract : Gears are the heart of many machines, being its function transform and transmit torque. This work is a study of adequate design requirements, in particular, the best methodology to early detect gear fatigue failure using a gear test rig, an FZG test machine. READ MORE

  3. 3. Acoustic Droplet Vaporization : An Assessment of How Ultrasound Wave Parameters Influence the Vaporization Efficiency

    University essay from KTH/Medicinteknik och hälsosystem

    Author : Sara Öquist; [2020]
    Keywords : Acoustic Droplet Vaporization; Verasonics; Ultrasound; Vaporization Efficiency; Phase-change Contrast Agents;

    Abstract : Acoustic droplet vaporization (ADV) is a process in which a phase shift of a liquified droplet into a gaseous microbubble, is triggered using an ultrasonic wave. In contrast to utilizing conventional contrast agents in ultrasound, the phase change contrast agents used in ADV can extravasate into tumor tissue, and they offer a greater circulatory lifespan, thereby increasing the potential applications in which they can be utilized. READ MORE

  4. 4. Putting behavioral assays on fish to the test: Are sociality and scototaxis trials relevant in the wild?

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Arno Veenstra; [2020]
    Keywords : Acoustic telemetry; Social network; Sociality; Scototaxis; Migration;

    Abstract : Animal behavior has become a frequently used tool in modern ecology and ecotoxicology, where laboratory behavioral traits are recognized as sensitive endpoints for assessing natural behavior or non-lethal effects of pollutants on animals. Within these research fields, behavioral traits measured in laboratory environments have been used to formulate predictions of ecological consequences that accompany specific behavior. READ MORE

  5. 5. An indicative case-control study of noise perception due to environmental noise sources

    University essay from KTH/Marcus Wallenberg Laboratoriet MWL

    Author : Marcus Johansson ; [2020]
    Keywords : Noise perception; Psychoacoustics; Environmental noise; Bullerpåverkan; Psykoakustik; Samhällsbuller;

    Abstract : The subject of the thesis was proposed by the acoustic consultancy firm Brekke & Strand, which is of relevance for their additional understanding and development of services and contribution to robust solutions. The aim with this thesis is to give indicative results and to dig deeper into the relation between environmental noise and the perception of the same, specially focusing on construction related noise but also permanent noise sources that originates from infrastructure. READ MORE